<SEC-DOCUMENT>0000930413-20-001761.txt : 20200706
<SEC-HEADER>0000930413-20-001761.hdr.sgml : 20200706
<ACCEPTANCE-DATETIME>20200706153301
ACCESSION NUMBER:		0000930413-20-001761
CONFORMED SUBMISSION TYPE:	S-8 POS
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20200706
DATE AS OF CHANGE:		20200706
EFFECTIVENESS DATE:		20200706

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FIRST HORIZON NATIONAL CORP
		CENTRAL INDEX KEY:			0000036966
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				620803242
		STATE OF INCORPORATION:			TN
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-8 POS
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-235757
		FILM NUMBER:		201013388

	BUSINESS ADDRESS:	
		STREET 1:		165 MADISON AVENUE
		CITY:			MEMPHIS
		STATE:			TN
		ZIP:			38103
		BUSINESS PHONE:		9018186232

	MAIL ADDRESS:	
		STREET 1:		165 MADISON AVENUE
		CITY:			MEMPHIS
		STATE:			TN
		ZIP:			38103

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FIRST TENNESSEE NATIONAL CORP
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FIRST TENNESSEE BANKS INC
		DATE OF NAME CHANGE:	19600201
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-8 POS
<SEQUENCE>1
<FILENAME>c100069_s8pos.htm
<TEXT>
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<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">As filed with the U.S. Securities and
Exchange Commission on July 6, 2020</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">Registration No. 333-235757</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>UNITED STATES<BR>SECURITIES AND EXCHANGE COMMISSION</B></P>

<P STYLE="font: bold 11pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Washington, D.C. 20549</P>

<P STYLE="font: bold 11pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 14pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>POST-EFFECTIVE AMENDMENT NO. 1<BR>
ON FORM S-8, TO FORM S-4 </B></P>

<P STYLE="font: 14pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>REGISTRATION STATEMENT UNDER THE SECURITIES
ACT OF 1933</B></P>

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<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: bold 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">First Horizon National Corporation</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(Exact name of registrant as specified
in its charter) </B></P>

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<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 45%; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>Tennessee</B></FONT><BR>
<FONT STYLE="font-size: 10pt">(State or other jurisdiction of incorporation or organization)</FONT></TD>
    <TD STYLE="width: 10%; padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD>
    <TD STYLE="width: 45%; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>62-0803242</B></FONT><BR>
<FONT STYLE="font-size: 10pt">(I.R.S. Employer Identification No.)</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>165 Madison Avenue</B></FONT><BR>
<FONT STYLE="font-size: 10pt"><B>Memphis, Tennessee</B></FONT><BR>
<FONT STYLE="font-size: 10pt">(Address of principal executive offices)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>38103</B></FONT><BR>
<FONT STYLE="font-size: 10pt">(zip code)</FONT></TD></TR>
</TABLE>
<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: bold 12pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><FONT STYLE="font-size: 11pt">IBERIABANK
Corporation 2019 Stock Incentive Plan</FONT><BR>
<FONT STYLE="font-size: 11pt">IBERIABANK Corporation 2016 Stock Incentive Plan</FONT><BR>
<FONT STYLE="font-size: 11pt">IBERIABANK Corporation Amended&nbsp;&amp; Restated 2010 Stock Incentive Plan</FONT><BR>
<FONT STYLE="font-size: 11pt">IBERIABANK Corporation 2005 Stock Incentive Plan</FONT><BR> <FONT STYLE="font-size: 11pt">Florida Gulf Bank Officers&rsquo;&nbsp;&amp; Employees&rsquo; Stock Option Plan</FONT><BR>
<FONT STYLE="font-size: 10pt; font-weight: normal">(Full titles of the plans)</FONT></P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Clyde A. Billings, Jr.</B><BR>
<B>Senior Vice President, Assistant General Counsel, and Corporate Secretary</B><BR>
<B>165 Madison Avenue</B><BR>
<B>Memphis, Tennessee 38103</B><BR>
(Name and address of agent for service)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(901) 523-5679<BR>
<FONT STYLE="font-weight: normal">(Telephone number, including area code, of agent for service)</FONT></P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B><I>With
a copy to: </I></B><BR>
<B>John A. Niemoeller</B><BR>
<B>Senior Vice President, Counsel, and Assistant Corporate Secretary</B><BR>
<B>165 Madison Avenue</B><BR>
<B>Memphis, Tennessee 38103</B><BR>
<B>(901) 523-4170</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; border-bottom: Black 1px solid">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0pt">Indicate by check mark whether the registrant
is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth
company. See the definitions of &ldquo;large accelerated filer,&rdquo; &ldquo;accelerated filer,&rdquo; &ldquo;smaller reporting
company,&rdquo; and &ldquo;emerging growth company&rdquo; in Rule 12b-2 of the Exchange Act.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0pt">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 17%"><FONT STYLE="font-size: 10pt">Large accelerated filer</FONT></TD>
    <TD STYLE="width: 4%"><FONT STYLE="font: 10pt Wingdings">x</FONT></TD>
    <TD STYLE="width: 49%">&nbsp;</TD>
    <TD STYLE="width: 22%"><FONT STYLE="font-size: 10pt">Accelerated filer</FONT></TD>
    <TD STYLE="width: 8%"><FONT STYLE="font: 10pt Wingdings">&#168;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-size: 10pt">Non-accelerated filer</FONT></TD>
    <TD><FONT STYLE="font: 10pt Wingdings">&#168;</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Smaller reporting company</FONT></TD>
    <TD><FONT STYLE="font: 10pt Wingdings">&#168;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Emerging growth company</FONT></TD>
    <TD><FONT STYLE="font: 10pt Wingdings">&#168;</FONT></TD></TR>
</TABLE>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">If an emerging growth company, indicate by check mark if the
registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards
provided pursuant to Section 7(a)(2)(B) of the Securities Act. <FONT STYLE="font-family: Wingdings">&#168;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>CALCULATION OF REGISTRATION FEE</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 28%; border-bottom: Black 1pt solid; text-align: center; vertical-align: bottom"><B>Title
        of each class of<BR>securities to be registered</B></TD>
    <TD STYLE="width: 18%; border-bottom: Black 1pt solid; padding-right: 5.75pt; padding-left: 5.75pt; text-align: center"><B>Amount
        to be<BR>registered</B></TD>
    <TD STYLE="width: 17%; border-bottom: Black 1pt solid; padding-right: 5.75pt; padding-left: 5.75pt; text-align: center"><B>Proposed<BR>maximum<BR>offering price<BR>
        per share</B></TD>
    <TD STYLE="width: 19%; border-bottom: Black 1pt solid; padding-right: 5.75pt; padding-left: 5.75pt; text-align: center"><B>Proposed maximum<BR>aggregate<BR>offering price</B></TD>
    <TD STYLE="width: 18%; border-bottom: Black 1pt solid; padding-right: 5.75pt; padding-left: 5.75pt; text-align: center"><B>Amount of<BR>registration fee </B></TD></TR>
<TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-left: 15.5pt; text-indent: -12.5pt"><FONT STYLE="font-size: 10pt">Common Stock, par value $0.625 per share<SUP>(1)</SUP></FONT></TD>
    <TD STYLE="vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.75pt; padding-left: 5.75pt; text-align: center"><FONT STYLE="font-size: 10pt">16,288,193<SUP>(3)</SUP></FONT></TD>
    <TD STYLE="vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.75pt; padding-left: 5.75pt; text-align: center"><FONT STYLE="font-size: 10pt">N/A<SUP>(2)</SUP></FONT></TD>
    <TD STYLE="vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.75pt; padding-left: 5.75pt; text-align: center"><FONT STYLE="font-size: 10pt">N/A<SUP>(2)</SUP></FONT></TD>
    <TD STYLE="vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.75pt; padding-left: 5.75pt; text-align: center"><FONT STYLE="font-size: 10pt">N/A<SUP>(2)</SUP></FONT></TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 18pt"><FONT STYLE="font-size: 10pt">(1)</FONT></TD>
    <TD STYLE="text-align: justify"><FONT STYLE="font-size: 10pt">This Post-Effective Amendment No. 1 on Form S-8 (this &ldquo;Post-Effective Amendment&rdquo;) covers shares of common stock, par value $0.625 per share (&ldquo;First Horizon Common Stock&rdquo;), of First Horizon National Corporation (&ldquo;First Horizon&rdquo;), originally registered on its Registration Statement on Form S-4 (No. 333-235757) (as amended, the &ldquo;Original Registration Statement&rdquo;), to which this filing is a post-effective amendment.&nbsp;&nbsp;Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the &ldquo;Securities Act&rdquo;), this Registration Statement also covers any additional shares of Common Stock that may become issuable in respect of the securities identified in the above table by reason of any share dividend, share split, recapitalization, merger, consolidation, reorganization, or other similar transaction or anti-dilution or other adjustment provision of an applicable plan with securities registered herewith which results in an increase in the number of outstanding shares of Common Stock.</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-size: 10pt">(2)</FONT></TD>
    <TD STYLE="text-align: justify"><FONT STYLE="font-size: 10pt">The registration fee in respect of the shares of Common Stock was paid previously at the time of filing the Original Registration Statement.</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-size: 10pt">(3)</FONT></TD>
    <TD STYLE="text-align: justify"><FONT STYLE="font-size: 10pt">Represents (a) 13,315,591 shares of Common Stock issuable
    pursuant to IBERIABANK Corporation&rsquo;s 2019 Stock Incentive Plan (the&nbsp;&ldquo;2019 Plan&rdquo;), (b) 1,281,132 shares
    of Common Stock issuable pursuant to IBERIABANK Corporation&rsquo;s 2016 Stock Incentive Plan (the &ldquo;2016 Plan&rdquo;),
    (c) 1,568,962 shares of Common Stock issuable pursuant to IBERIABANK Corporation&rsquo;s Amended&nbsp;&amp; Restated 2010
    Stock Incentive Plan (the &ldquo;2010 Plan&rdquo;), (d)  120,908 shares of Common Stock issuable pursuant to IBERIABANK
    Corporation&rsquo;s 2005 Stock Incentive Plan (the &ldquo;2005 Plan&rdquo;), and (e) 1,600 shares of Common Stock issuable
    pursuant to Florida Gulf Bank Officers&rsquo;&nbsp;&amp; Employees&rsquo; Stock Option Plan (the &ldquo;Legacy
    Plan&rdquo;).</FONT></TD></TR>
</TABLE>

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<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>EXPLANATORY NOTE </B></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">On July 1, 2020, in accordance with the Agreement
and Plan of Merger, dated as of November 3, 2019 (the &ldquo;Merger Agreement&rdquo;), by and between First Horizon National Corporation,
a Tennessee corporation (&ldquo;First Horizon&rdquo;), and IBERIABANK Corporation, a Louisiana corporation (&ldquo;IBKC&rdquo;),
IBKC merged with and into the Company (the &ldquo;Merger&rdquo;), with the Company surviving the Merger.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">At the effective time of the Merger (the
&ldquo;Effective Time&rdquo;), each issued and outstanding share of common stock of IBKC, par value $1.00 per share (&ldquo;IBKC
Common Stock&rdquo;) (other than certain shares of IBKC Common Stock owned by First Horizon and IBKC), was automatically converted
into the right to receive 4.584 (the &ldquo;Exchange Ratio&rdquo;) shares of the common stock, par value $0.625 per share, of First
Horizon (the &ldquo;First Horizon Common Stock&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">Pursuant to the terms of the Merger Agreement,
at the Effective Time:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 54pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD>(1) except as set forth below, each IBKC equity award granted under IBKC&#8217;s equity compensation plans that was outstanding
immediately prior to the Effective Time accelerated in full and converted into shares of First Horizon Common Stock other than
(i) IBKC stock options, which automatically converted into stock options with respect to First Horizon Common Stock and (ii) IBKC
equity awards that could be settled only in cash, in each case, after giving effect to the Exchange Ratio and appropriate adjustments
to reflect the consummation of the Merger and the terms and conditions applicable to such awards prior to the Effective Time; and</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 11pt Times New Roman, Times, Serif">&nbsp;</P>

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<TD STYLE="width: 54pt; font-size: 10pt"></TD><TD STYLE="width: 18pt; font-size: 10pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="font-size: 10pt">(2)
                                         each IBKC equity award granted on or after November 3, 2019 and not in violation of the
                                         Merger Agreement that expressly provides for treatment in connection with the occurrence
                                         of the effective time that is different from the treatment prescribed in the Merger Agreement
                                         as set forth in clause (1) above, or as mutually agreed by the parties and a holder of
                                         any IBKC equity award, was converted into an equity award denominated in shares of First
                                         Horizon Common Stock, with the number of shares (and, in the case of stock options, the
                                         applicable exercise price) adjusted based on the Exchange Ratio. </TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 12pt Times New Roman, Times, Serif">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">In addition, this Post-Effective Amendment
registers up to 13,315,591 additional shares of First Horizon Common Stock
which may be issuable pursuant to the 2019 Plan.</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">&nbsp;</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 36pt"><B>PART I</B></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 36pt">&nbsp;</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 36pt"><B>INFORMATION REQUIRED
IN THE SECTION 10(a) PROSPECTUS</B></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 36pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">The information required by Item 1 and Item
2 of Part I of Form S-8 is omitted from this filing as permitted by Rule 424 under the Securities Act of 1933, as amended (the
&ldquo;Securities Act&rdquo;), and the introductory note to Part I of Form S-8. The documents containing the information specified
in Part I will be delivered to the participants in the plans covered by this Post-Effective Amendment. These documents and the
documents incorporated by reference to this Post-Effective Amendment pursuant to Item 3 of Part II of Form S-8, taken together,
constitute a prospectus that meets the requirements of Section 10(a) of the Securities Act.</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">&nbsp;</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 36pt"><B>PART II</B></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 36pt">&nbsp;</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 36pt"><B>INFORMATION REQUIRED
IN THE REGISTRATION STATEMENT</B></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 36pt">&nbsp;</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 3. Incorporation of Documents by Reference.</B></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">The following documents previously filed
by First Horizon with the U.S. Securities and Exchange Commission (the &ldquo;Commission&rdquo;) are incorporated into this Post-Effective
Amendment by reference and made a part hereof:</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 18pt">1.</TD><TD>First Horizon&rsquo;s Annual Report on Form 10-K for the fiscal year ended December 31, 2019, filed with the Commission on
February 28, 2020;</TD></TR></TABLE>

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<TD STYLE="width: 0"></TD><TD STYLE="width: 18pt">2.</TD><TD>First Horizon&rsquo;s Quarterly Report on Form 10-Q for the quarter ended March 31, 2020, filed with the Commission on May
8, 2020;</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 11pt Times New Roman, Times, Serif">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 18pt">3.</TD><TD>First Horizon&rsquo;s Current Reports on Form 8-K (other than portions of those documents not deemed to be filed) filed with
the Commission on the following dates in 2020: February 3, April 8, April 13, April 14, April 23, April 27, April 28, April 29,
May 20, May 26, May 28, June 16, and July 2;</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 11pt Times New Roman, Times, Serif">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 18pt">4.</TD><TD>The description of First Horizon Common Stock contained in the registration statement on Form 8-A (File No. 001-15185) filed
with the Commission on July 26, 1999, and any amendment or report filed for the purpose of updating that description.</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">All documents subsequently filed by First
Horizon pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act of 1934 (the &ldquo;Exchange Act&rdquo;) (other than
any such documents or portions thereof that are not deemed to be filed), prior to the filing of a post-effective amendment which
indicates that all securities offered hereby have been sold or which deregisters all securities then remaining unsold, shall be
deemed to be incorporated by reference in this Post-Effective Amendment and to be a part hereof from the date of filing of such
documents.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">Any statement contained in this Post-Effective
Amendment or in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded
for purposes of Post-Effective Amendment to the extent that a statement contained or incorporated by reference herein or in any
subsequently filed document that is deemed to be incorporated by reference herein modifies or supersedes such statement. Any such
statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this Post-Effective
Amendment.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 4. Description of Securities.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt; background-color: white">Not applicable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt; background-color: white"></P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt; background-color: white">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 5. Interests of Named Experts and Counsel.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">The validity of the shares of First Horizon
Common Stock offered hereby has been passed upon by Charles T. Tuggle, Jr., Executive Vice President and General Counsel of First
Horizon. As of May 31, 2020, Mr. Tuggle beneficially owned shares of First Horizon Common Stock and options to acquire shares of
First Horizon Common Stock representing less than one percent (1%) of the total outstanding shares of First Horizon Common Stock.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 6. Indemnification of Directors and Officers.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">Sections 48-18-501 through 48-18-509 of the
Tennessee Business Corporation Act (the &ldquo;TBCA&rdquo;) authorize a corporation to provide for the indemnification of officers,
directors, employees and agents in terms sufficiently broad to permit indemnification under certain circumstances for liabilities
(including reimbursement for expenses incurred) arising under the Securities Act. First Horizon adopted the provisions of the Tennessee
statute pursuant to Article Six of First Horizon&rsquo;s bylaws. In addition, First Horizon has a directors&rsquo; and officers&rsquo;
liability insurance policy which provides coverage sufficiently broad to permit indemnification under certain circumstances for
liabilities (including reimbursement for expenses incurred) arising under the Securities Act.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">Section 48-12-102 of the TBCA permits the
inclusion in the charter of a Tennessee corporation of a provision, with certain exceptions, eliminating the personal monetary
liability of directors to the corporation or its shareholders for breach of the duty of care. First Horizon has adopted the provisions
of the statute as Article 14 of its restated charter.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">First Horizon&rsquo;s shareholders have approved
a provision in Article Six of First Horizon&rsquo;s bylaws pursuant to which First Horizon is required to indemnify each director
and any officers designated by the board of directors, and advance expenses, to the maximum extent not prohibited by law. In accordance
with the foregoing, First Horizon is authorized to enter into individual indemnity agreements with its directors and such officers.
Such indemnity agreements have been approved for all of the directors and certain officers.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">Certain rules of the Federal Deposit Insurance
Corporation limit the ability of certain depository institutions, their subsidiaries and their affiliated depository institution
holding companies to indemnify affiliated parties, including institution directors. In general, subject to the ability to purchase
directors&rsquo; and officers&rsquo; liability insurance and to advance professional expenses under certain circumstances, the
rules prohibit such institutions from indemnifying a director for certain costs incurred with regard to an administrative or enforcement
action commenced by any federal banking agency that results in a final order or settlement pursuant to which the director is assessed
a civil money penalty, removed from office, prohibited from participating in the affairs of an insured depository institution or
required to cease and desist from or take an affirmative action described in Section 8(b) of the Federal Deposit Insurance Act
(12 U.S.C. &sect; 1818(b)).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 7. Exemption from Registration Claimed.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">Not applicable.</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 8. Exhibits.</B></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: bottom; font: 8pt Times New Roman, Times, Serif">
    <TD STYLE="border-bottom: black 1pt solid; font: 8pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; font: 8pt Times New Roman, Times, Serif; text-align: right">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="border-bottom: black 1pt solid; font: 8pt Times New Roman, Times, Serif"><B>Exhibit No.</B></TD>
    <TD STYLE="font: 8pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; font: 8pt Times New Roman, Times, Serif; text-align: center"><B>Description</B></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="width: 1%; font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="width: 1%; font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="width: 6%; font: 10pt Times New Roman, Times, Serif">4.1</TD>
    <TD STYLE="width: 3%; font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="width: 2%; font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="width: 87%; font: 10pt Times New Roman, Times, Serif"><A HREF="http://www.sec.gov/Archives/edgar/data/36966/000093041318002335/c91706_ex3-1.htm" STYLE="-sec-extract: exhibit">Restated Charter of First Horizon National Corporation (incorporated
    by reference to Exhibit 3.1 of the Current Report on Form 8-K of First Horizon National Corporation, filed July 25, 2018)</A></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">4.2</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><A HREF="http://www.sec.gov/Archives/edgar/data/36966/000093041320001502/c95916_ex3-1.htm" STYLE="-sec-extract: exhibit">Articles of Amendment of First Horizon National Corporation (incorporated
    by reference to Exhibit 3.1 of the Current Report on Form 8-K of First Horizon National Corporation, filed May 28, 2020)</A></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">4.3</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><A HREF="http://www.sec.gov/Archives/edgar/data/36966/000093041320001742/c100054_ex3-1.htm" STYLE="-sec-extract: exhibit">Articles of Amendment of First Horizon National Corporation&mdash;Authorized
    Common Stock (incorporated by reference to Exhibit 3.1 of the Current Report on Form 8-K of First Horizon National Corporation,
    filed July 2, 2020)</A></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">4.4</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><A HREF="http://www.sec.gov/Archives/edgar/data/36966/000093041320001742/c100054_ex3-2.htm" STYLE="-sec-extract: exhibit">Articles of Amendment of First Horizon National Corporation&mdash;Preferred
    Stock (incorporated by reference to Exhibit 3.2 of the Current Report on Form 8-K of First Horizon National Corporation, filed
    July 2, 2020)</A></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">4.5</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><A HREF="http://www.sec.gov/Archives/edgar/data/36966/000093041320001742/c100054_ex3-3.htm" STYLE="-sec-extract: exhibit">Amended and Restated Bylaws of First Horizon National Corporation, dated
    as of July 1, 2020 (incorporated by reference to Exhibit 3.3 of the Current Report on Form 8-K of First Horizon National Corporation,
    filed July 2, 2019)</A></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">4.6</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><A HREF="http://www.sec.gov/Archives/edgar/data/933141/000119312509106771/dex101.htm" STYLE="-sec-extract: exhibit">IBERIABANK Corporation 2005 Stock Incentive Plan, as amended (incorporated
    by reference to Exhibit 10.1 of the Quarterly Report on Form 10-Q of IBERIABANK Corporation, filed May 11, 2009)</A></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">4.7</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><A HREF="http://www.sec.gov/Archives/edgar/data/933141/000119312511136128/dex101.htm" STYLE="-sec-extract: exhibit">IBERIABANK Corporation Amended&nbsp;&amp; Restated 2010 Stock Incentive
    Plan (incorporated by reference to Exhibit 10.1 of the Current Report on Form 8-K of IBERIABANK Corporation, filed May 6,
    2011)</A></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">4.8</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><A HREF="http://www.sec.gov/Archives/edgar/data/933141/000162828016016029/ibkc-form8xk5x4x2016.htm" STYLE="-sec-extract: exhibit">IBERBIABANK Corporation 2016 Stock Incentive Plan (incorporated by reference
    to Exhibit 10 of the Current Report on Form 8-K of IBERIABANK Corporation, filed May 10, 2016)</A></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">4.9</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><A HREF="http://www.sec.gov/Archives/edgar/data/933141/000162828019006258/a2019stockincentiveplan318.htm" STYLE="-sec-extract: exhibit">IBERIABANK Corporation 2019 Stock Incentive Plan (incorporated by reference
    to Exhibit 10.1 of the Current Report on Form 8-K of IBERIABANK Corporation, filed May 8, 2019)</A></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">4.10</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><A HREF="http://www.sec.gov/Archives/edgar/data/933141/000119312512349560/d394779dex41.htm" STYLE="-sec-extract: exhibit">Florida Gulf Bank Officers&rsquo;&nbsp;&amp; Employees&rsquo; Stock Option
    Plan (incorporated by reference to Exhibit 4.1 of the Registration Statement on Form S-8 of IBERIABANK Corporation, filed August
    10, 2012)</A></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">5.1</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><A HREF="c100069_ex5-1.htm">Opinion of Charles T. Tuggle, Jr. as to validity of common stock being registered hereby</A></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">23.1</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><A HREF="c100069_s8pos.htm">Consent of KPMG LLP (independent registered public accounting firm)</A></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">23.2</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><A HREF="c100069_ex5-1.htm">Consent of Charles T. Tuggle, Jr. (included as part of his opinion filed as Exhibit 5.1)</A></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">24.1</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><A HREF="http://www.sec.gov/Archives/edgar/data/36966/000093041319003104/c94738_ex24-1.htm" STYLE="-sec-extract: exhibit">Powers of Attorneys of Directors and Officers of First Horizon National
    Corporation (previously filed as Exhibit 24.1 to the registration statement on Form S-4 (No. 333-235757), filed December 31,
    2019 with respect to certain Directors and Officers and included on signature page with respect to others)</A></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 9. Undertakings.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">The undersigned registrant hereby undertakes:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">(1) To file, during any period in which offers or sales are
being made, a post-effective amendment to this registration statement:</P>

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    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 10pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: left; width: 100%"><PAGE></PAGE></TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 19.85pt">(i) to include any prospectus required by Section
10(a)(3) of the Securities Act of 1933;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 19.85pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 19.85pt">(ii) to reflect in the prospectus any facts or events
arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually
or in the aggregate, represent a fundamental change in the information set forth in the registration statement; and</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 19.85pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 19.85pt">(iii) to include any material information with respect
to the plan of distribution not previously disclosed in the registration statement or any material change to such information in
the registration statement;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 19.85pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 19.85pt">provided, however, that paragraphs (1)(i) and (1)(ii)
do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in reports
filed with or furnished to the Commission by the registrant pursuant to Section 13 or Section 15(d) of the Exchange Act that are
incorporated by reference in this registration statement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 19.85pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">(2) That, for the purpose of determining any liability under
the Securities Act, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities
offered therein, and the offering of such securities at that time shall be deemed to be the initial <I>bona fide</I> offering thereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">(3) To remove from registration by means of a post-effective
amendment any of the securities being registered which remain unsold at the termination of the offering.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">The undersigned registrant hereby undertakes that, for purposes
of determining any liability under the Securities Act, each filing of the registrant&rsquo;s annual report pursuant to Section
13(a) or Section 15(d) of the Exchange Act that is incorporated by reference in the registration statement shall be deemed to be
a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall
be deemed to be the initial bona fide offering thereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Insofar as indemnification for liabilities arising under the
Securities Act may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions,
or otherwise, the registrant has been advised that in the opinion of the Commission such indemnification is against public policy
as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such
liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person
of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling
person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification
by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.</P>

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<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">SIGNATURES</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">Pursuant to the requirements of the Securities
Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing
on Form S-8 and has duly caused this Post-Effective Amendment No. 1 on Form S-8 to the registrant&rsquo;s registration statement
on Form S-4 to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Memphis and State of Tennessee,
on July 2, 2020.</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="width: 45%; font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="width: 2%; font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="width: 1%; font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="width: 52%; font: 10pt Times New Roman, Times, Serif"><B>FIRST HORIZON NATIONAL CORPORATION</B></TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">By: </TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1px solid; font: 10pt Times New Roman, Times, Serif">/s/ Clyde A. Billings, Jr.</TD></TR>
<TR STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Name:
                                         Clyde A. Billings, Jr.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Title: Senior Vice President, Assistant General Counsel and
Corporate Secretary</P>
</TD></TR>
</TABLE>
<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>POWER OF ATTORNEY</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">Each of the directors of First Horizon whose
name appears beside ** hereby constitutes and appoints each of WILLIAM C. LOSCH III, JEFF L. FLEMING, CLYDE A. BILLINGS, JR., and
DANE P. SMITH, jointly and each of them severally, as his or her true and lawful attorney-in-fact and agent, with full power of
substitution and resubstitution, in his or her name and on his or her behalf, in any and all capacities, to execute and sign this
Post-Effective Amendment on Form S-8 to the Registration Statement on Form S-4, and to file the same, with all exhibits thereto
and all documents in connection therewith, with the Securities and Exchange Commission (the &ldquo;SEC&rdquo;), and, further, to
execute and sign any and all amendments thereto (including post-effective amendments) and to file the same, with all exhibits thereto
and other documents in connection therewith, with the SEC granting unto said attorney-in-fact and agent full power of authority
to do and perform each and every act and thing requisite or necessary to be done in and about the premises, as fully to all intents
and purposes as he or she might or could do in person, thereby ratifying and confirming all that said attorney-in-fact and agent,
or her substitute, may lawfully do or cause to be done.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">Pursuant
to the requirements of the Securities Act of 1933, </FONT>this Post-Effective Amendment No. 1 on Form S-8 to the registrant&rsquo;s
registration statement on Form S-4<FONT STYLE="font-family: Times New Roman, Times, Serif"> has been signed by the following persons
in the capacities indicated on July 2, 2020.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36pt">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 34%; text-align: center; border-bottom: Black 1px solid"><FONT STYLE="font: 8pt Times New Roman, Times, Serif"><B>Signature</B></FONT></TD>
    <TD STYLE="width: 2%"><FONT STYLE="font-size: 8pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 64%; border-bottom: black 1pt solid; text-align: center"><FONT STYLE="font: 8pt Times New Roman, Times, Serif"><B>Title</B></FONT></TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD STYLE="font-size: 8pt; text-align: center">&nbsp;</TD>
    <TD STYLE="font-size: 1pt">&nbsp;</TD>
    <TD STYLE="font-size: 10pt; text-align: center">&nbsp;</TD></TR>
<TR>
    <TD STYLE="border-bottom: Black 1pt solid; vertical-align: bottom; font-size: 8pt; text-align: center">&nbsp;<FONT STYLE="font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">/s/ Daryl
    G. Byrd</FONT></FONT> </TD>
    <TD STYLE="font-size: 11pt">&nbsp;</TD>
    <TD ROWSPAN="2" STYLE="vertical-align: top; padding-left: 9.9pt; font-size: 10pt; text-indent: -9.9pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">Executive
    Chairman and Director</FONT></TD></TR>
<TR>
    <TD STYLE="vertical-align: bottom; font-size: 8pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>(Daryl
    G. Byrd**)</B></FONT></TD>
    <TD STYLE="font-size: 11pt">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: bottom; font-size: 8pt">&nbsp;</TD>
    <TD STYLE="font-size: 11pt">&nbsp;</TD>
    <TD STYLE="font-size: 10pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 8pt; text-align: center; border-bottom: Black 1px solid; vertical-align: bottom">*</TD>
    <TD STYLE="font-size: 12pt">&nbsp;</TD>
    <TD STYLE="padding-left: 9.9pt; font-size: 10pt; text-indent: -9.9pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">President,
    Chief Executive Officer and Director (Principal Executive Officer)</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 8pt; text-align: center"><B>(D. Bryan Jordan)</B></TD>
    <TD STYLE="font-size: 12pt">&nbsp;</TD>
    <TD STYLE="padding-left: 9.9pt; font-size: 10pt; text-indent: -9.9pt">&nbsp;</TD></TR>
<TR>
    <TD STYLE="font-size: 8pt">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="font-size: 10pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 8pt; text-align: center; border-bottom: Black 1px solid; vertical-align: bottom">*</TD>
    <TD STYLE="font-size: 12pt">&nbsp;</TD>
    <TD STYLE="padding-left: 9.9pt; font-size: 10pt; text-indent: -9.9pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">Senior
    Executive Vice President and Chief Financial Officer (Principal Financial Officer)</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 8pt; text-align: center"><B>(William C. Losch III)</B></TD>
    <TD STYLE="font-size: 12pt">&nbsp;</TD>
    <TD STYLE="padding-left: 9.9pt; font-size: 10pt; text-indent: -9.9pt">&nbsp;</TD></TR>
<TR>
    <TD STYLE="font-size: 8pt">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="font-size: 10pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 8pt; text-align: center; border-bottom: Black 1px solid; vertical-align: bottom">*</TD>
    <TD STYLE="font-size: 8pt">&nbsp;</TD>
    <TD STYLE="padding-left: 9.9pt; font-size: 10pt; text-indent: -9.9pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">Executive
    Vice President and Chief Accounting Officer (Principal Accounting Officer)</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 8pt; text-align: center"><B>(Jeff L. Fleming)</B></TD>
    <TD STYLE="font-size: 12pt">&nbsp;</TD>
    <TD STYLE="padding-left: 9.9pt; font-size: 10pt; text-indent: -9.9pt">&nbsp;</TD></TR>
<TR>
    <TD STYLE="font-size: 8pt">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="font-size: 10pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 8pt; text-align: center; vertical-align: bottom; border-bottom: Black 1px solid">*</TD>
    <TD STYLE="font-size: 12pt">&nbsp;</TD>
    <TD STYLE="padding-left: 9.9pt; font-size: 10pt; text-indent: -9.9pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">Director,
    Vice Chairman</FONT></TD></TR>
<TR>
    <TD STYLE="font-size: 8pt; text-align: center"><B>(R. Eugene Taylor)</B></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="font-size: 10pt">&nbsp;</TD></TR>
<TR>
    <TD STYLE="font-size: 8pt; text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="font-size: 10pt">&nbsp;</TD></TR>
<TR>
    <TD STYLE="text-align: center; border-bottom: Black 1pt solid; font-size: 8pt"><FONT STYLE="font-size: 10pt">&nbsp;<FONT STYLE="font-family: Times New Roman, Times, Serif">/s/
    Harry V. Barton, Jr.</FONT></FONT></TD>
    <TD STYLE="font-size: 11pt">&nbsp;</TD>
    <TD ROWSPAN="2" STYLE="vertical-align: top; padding-left: 9.9pt; font-size: 10pt; text-indent: -9.9pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">Director</FONT></TD></TR>
<TR>
    <TD STYLE="font-size: 8pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>(Harry V. Barton,
    Jr.**)</B></FONT></TD>
    <TD STYLE="font-size: 11pt">&nbsp;</TD></TR>
</TABLE>

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<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: top; font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center; border-bottom: Black 1px solid">*</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">Director</TD></TR>
<TR STYLE="vertical-align: top; font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center"><B>(Kenneth A. Burdick)</B></TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="text-align: center; border-bottom: Black 1px solid; font: 8pt Times New Roman, Times, Serif">&nbsp;&nbsp;<FONT STYLE="font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">/s/ John N. Casbon</FONT></FONT> </TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">Director</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center"><B>(John N. Casbon**)</B></TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center; border-bottom: Black 1px solid">*</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">Director</TD></TR>
<TR STYLE="vertical-align: top; font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center"><B>(John C. Compton)</B></TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center; border-bottom: Black 1px solid">*</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">Director</TD></TR>
<TR STYLE="vertical-align: top; font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center"><B>(Wendy P. Davidson)</B></TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="text-align: center; border-bottom: Black 1px solid; font: 8pt Times New Roman, Times, Serif">&nbsp;&nbsp;<FONT STYLE="font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">/s/ William H. Fenstermaker</FONT></FONT> </TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">Director</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center"><B>(William H. Fenstermaker**)</B></TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="text-align: center; border-bottom: Black 1px solid; font: 8pt Times New Roman, Times, Serif">&nbsp;<FONT STYLE="font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">/s/ J. Michael Kemp, Sr.</FONT></FONT> </TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">Director</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center"><B>(J. Michael Kemp, Sr.**)</B></TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="border-top: Black 1px solid; font: 8pt Times New Roman, Times, Serif; text-align: center">&nbsp;</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="text-align: center; border-bottom: Black 1px solid; font: 8pt Times New Roman, Times, Serif">&nbsp;<FONT STYLE="font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">/s/
    Rick E. Maples</FONT></FONT> </TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">Director</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center"><B>(Rick E. Maples**)</B></TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center; border-bottom: Black 1px solid">*</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">Director</TD></TR>
<TR STYLE="vertical-align: top; font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center"><B>(Vicki R. Palmer)</B></TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center">&nbsp;</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="border-bottom: Black 1px solid; font: 8pt Times New Roman, Times, Serif; text-align: center">*</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">Director</TD></TR>
<TR STYLE="vertical-align: top; font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center"><B>(Colin V. Reed)</B></TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center">&nbsp;</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="border-bottom: Black 1px solid; font: 8pt Times New Roman, Times, Serif; text-align: center">&nbsp;<FONT STYLE="font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">/s/ E. Stewart Shea, III</FONT></FONT> &nbsp;</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">Director</TD></TR>
<TR STYLE="vertical-align: top; font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center"><B>(E. Stewart Shea, III**)</B></TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center">&nbsp;</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="border-bottom: Black 1px solid; font: 8pt Times New Roman, Times, Serif; text-align: center"><B>*</B></TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">Director</TD></TR>
<TR STYLE="vertical-align: top; font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center"><B>(Cecelia D. Stewart)</B></TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="vertical-align: bottom; font: 8pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center; border-bottom: Black 1px solid">*</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">Director</TD></TR>
<TR STYLE="vertical-align: top; font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center"><B>(Rajesh Subramaniam)</B></TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="text-align: center; border-bottom: Black 1px solid; font: 8pt Times New Roman, Times, Serif">&nbsp;<FONT STYLE="font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">/s/ Rosa Sugra&ntilde;es</FONT></FONT> </TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif">Director</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="font: 8pt Times New Roman, Times, Serif; text-align: center"><B>(Rosa Sugra&ntilde;es**)</B></TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="font: 11pt Times New Roman, Times, Serif">
    <TD COLSPAN="2" STYLE="border-top: Black 1px solid; font: italic 8pt Times New Roman, Times, Serif; text-align: center; color: #243F60">&nbsp;</TD>
    <TD STYLE="font: 11pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif">
    <TD STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif; width: 4%">*By:</TD>
    <TD STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif; width: 30%"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; border-bottom: Black 1px solid">/s/
                                         Clyde A. Billings, Jr.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Clyde A. Billings, Jr.<BR>
<B>As Attorney-in-Fact</B></P></TD>
    <TD STYLE="vertical-align: top; font: 10pt Times New Roman, Times, Serif; width: 2%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font: 10pt Times New Roman, Times, Serif; width: 64%">&nbsp;</TD>
    </TR>
</TABLE>

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<TYPE>EX-5.1
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<FILENAME>c100069_ex5-1.htm
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<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: right"><B>Exhibit 5.1</B></P>

<P STYLE="text-align: right; font: 12pt Times New Roman, Times, Serif">July 2, 2020</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt">First Horizon National Corporation,<BR>
&#9;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;165 Madison Avenue,<BR>
&#9;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Memphis, Tennessee 38103.</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt">Ladies and Gentlemen:</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 1in">I am an Executive Vice President and the
General Counsel of First Horizon National Corporation, a Tennessee corporation (the &ldquo;Company&rdquo;). I have acted as legal
counsel to the Company in connection with the Post-Effective Amendment No. 1 on Form S-8 to Form S-4 (the &ldquo;Registration
Statement&rdquo;) filed under the Securities Act of 1933, as amended (the &ldquo;Act&rdquo;), to register the following shares
of common stock, par value $0.625 per share, of the Company (&ldquo;Common Stock&rdquo;), issuable pursuant to awards granted
under the following equity compensation plans (as amended through July 1, 2020, the &ldquo;Plans&rdquo;) sponsored by IBERIABANK
Corporation (&ldquo;IBKC&rdquo;): (a) 13,315,591 shares of Common Stock, issuable pursuant to IBKC&rsquo;s 2019 Stock Incentive
Plan (the &ldquo;2019 Plan&rdquo;), (b) 1,281,132 shares of Common Stock issuable pursuant to IBKC&rsquo;s 2016 Stock Incentive
Plan (the &ldquo;2016 Plan&rdquo;), (c) 1,568,962 shares of Common Stock issuable pursuant to IBKC&rsquo;s 2010 Stock Incentive
Plan (the &ldquo;2010 Plan&rdquo;), (d) 120,908 shares of Common Stock issuable pursuant to IBKC&rsquo;s 2005 Stock Incentive
Plan (the &ldquo;2005 Plan&rdquo;), and (e) 1,600 shares of Common Stock (shares of Common Stock in clauses (a)-(e), the &ldquo;Securities&rdquo;)
issuable pursuant to Florida Bank Group Officers &amp; Employees Stock Incentive Plan (the &ldquo;Legacy Plan&rdquo;), in each
case in connection with the merger of IBKC with and into the Company, with the Company surviving the merger (the &ldquo;Merger&rdquo;),
pursuant to the Agreement and Plan of Merger, dated as of November 3, 2019 (the &ldquo;Merger Agreement&rdquo;), by and between
the Company and IBKC.</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 1in">I, or counsel acting under my supervision,
have examined such corporate records, certificates and other documents, and such questions of law, as we have considered necessary
or appropriate for the purposes of this opinion. We have also examined the originals, or duplicates or certified or conformed copies,
of such corporate records, certificates and other documents and have made such other investigations as we have deemed relevant
and necessary in connection with the opinion set forth below.</P>

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    <TD STYLE="width: 50%; padding-right: 5.4pt; padding-left: 5.4pt; font: 12pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 12pt"><BR STYLE="clear: both">
</FONT>First Horizon National Corporation</TD>
    <TD STYLE="width: 50%; padding-right: 5.4pt; padding-left: 5.4pt; font: 12pt Times New Roman, Times, Serif; text-align: right">-2-</TD></TR>
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<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 1in">Upon the basis of such examination, it
is my opinion that when the Registration Statement has become effective under the Act and the Securities are issued and delivered in accordance
with the terms and conditions of the Plans, after giving effect to the terms of the Merger Agreement and the consummation of the
Merger, the Securities will be validly issued, fully paid and nonassessable.</P>


<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 1in">The foregoing opinion is limited to the
laws of the State of Tennessee, and I am expressing no opinion as to the effect of the laws of any other jurisdiction.</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 1in">I have relied as to certain matters on
information obtained from public officials, officers of the Company and other sources believed by me to be responsible, and I have
assumed without verification the genuineness of all signatures on all documents examined by me, or counsel acting under my supervision,
the authenticity of all documents submitted to us as originals, the conformity to original documents of all documents submitted
to us as duplicates or certified or conformed copies, and the authenticity of the originals of such latter documents, and the legal
capacity of all individuals executing any of the foregoing documents. I have further assumed that there will be no material changes
in the documents that have been examined and that, at all times prior to the issuance of the Securities, the Company will maintain
a sufficient number of authorized but unissued shares of Common Stock available for such issuance.</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 1in">This letter is furnished by me, solely
in my capacity as General Counsel of the Company. I hereby consent to the filing of this opinion as an exhibit to the Registration
Statement. In giving such consent, I do not thereby admit that I am in the category of persons whose consent is required under
Section 7 of the Act.</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 1in">This opinion is expressly limited to the
matters set forth above and I render no opinion, whether by implication or otherwise, as to any other matters relating to the Company,
the Plans or the Securities.</P>


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    <TD STYLE="width: 50%; padding-right: 5.4pt; padding-left: 5.4pt; font: 12pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 12pt"><BR STYLE="clear: both">
<BR STYLE="clear: both">
</FONT>First Horizon National Corporation</TD>
    <TD STYLE="width: 50%; padding-right: 5.4pt; padding-left: 5.4pt; font: 12pt Times New Roman, Times, Serif; text-align: right">-3-</TD></TR>
</TABLE>
<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 1in">This opinion is given on the basis of the
law and the facts existing as of the date hereof. I undertake no obligation to advise you of any changes in applicable law or any
other matters that may come to my attention after the date hereof.</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0.5in 4.5in">Very truly yours,</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0 4.5in"><U>/s/ Charles T. Tuggle, Jr.</U></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0 4.5in">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0 4.5in">Charles T. Tuggle, Jr. &#9;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0 4.5in">Executive Vice President and</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0 4.5in">General Counsel</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0.5in 4in">&nbsp;</P>


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<TYPE>EX-23.1
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<FILENAME>c100069_ex23-1.htm
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<P STYLE="font: bold 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 0 20pt; text-align: right">Exhibit 23.1</P>

<P STYLE="font: bold 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 0 20pt; text-align: center">Consent of Independent Registered
Public Accounting Firm</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 0 10pt">The Board of Directors<BR>
First Horizon National Corporation:</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 0 10pt">We consent to the use of our reports dated February 27,
2020, with respect to the consolidated statements of condition of First Horizon National Corporation and subsidiaries (the Company)
as of December 31, 2019 and 2018, and the related consolidated statements of income, comprehensive income, equity, and cash flows
for each of the years in the three-year period ended December 31, 2019, and the effectiveness of internal control over financial
reporting as of December 31, 2019, incorporated by reference in this Registration Statement on Form S-8.</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 0 10pt; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 0 10pt">/s/ KPMG LLP</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 0 10pt">&nbsp;</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 10pt 0">Memphis, Tennessee<BR>
July 2, 2020</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 0 6pt; text-align: justify; text-indent: 0in">&nbsp;</P>

<hr noshade>

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